<?php

namespace Home\Controller;

class IndexController extends CommonController
{
    protected $page_as = 'home';

    /**
     * 网站主页
     */
    public function index()
    {
        if ($this->is_mobile_request()) {
            $url = (is_ssl() ? 'https://' : 'http://') . I('server.HTTP_HOST') . '/' . trim(I('server.REQUEST_URI'), '/') . '/mobile.php';
            header("Location: {$url}");
            exit();
        }
        $this->display();
    }

    /**
     * 是否手机端请求
     *
     * @return bool
     */
    private function is_mobile_request()
    {
        $_SERVER['ALL_HTTP'] = isset($_SERVER['ALL_HTTP']) ? $_SERVER['ALL_HTTP'] : '';
        $mobile_browser = '0';
        if (preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) $mobile_browser++;
        if ((isset($_SERVER['HTTP_ACCEPT'])) and (strpos(strtolower($_SERVER['HTTP_ACCEPT']), 'application/vnd.wap.xhtml+xml') !== false)) $mobile_browser++;
        if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) $mobile_browser++;
        if (isset($_SERVER['HTTP_PROFILE'])) $mobile_browser++;
        $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'], 0, 4));
        $mobile_agents = array(
            'w3c ', 'acs-', 'alav', 'alca', 'amoi', 'audi', 'avan', 'benq', 'bird', 'blac', 'blaz', 'brew', 'cell',
            'cldc', 'cmd-', 'dang', 'doco', 'eric', 'hipt', 'inno', 'ipaq', 'java', 'jigs', 'kddi', 'keji', 'leno',
            'lg-c', 'lg-d', 'lg-g', 'lge-', 'maui', 'maxo', 'midp', 'mits', 'mmef', 'mobi', 'mot-', 'moto', 'mwbp',
            'nec-', 'newt', 'noki', 'oper', 'palm', 'pana', 'pant', 'phil', 'play', 'port', 'prox', 'qwap', 'sage',
            'sams', 'sany', 'sch-', 'sec-', 'send', 'seri', 'sgh-', 'shar', 'sie-', 'siem', 'smal', 'smar', 'sony',
            'sph-', 'symb', 't-mo', 'teli', 'tim-', 'tosh', 'tsm-', 'upg1', 'upsi', 'vk-v', 'voda', 'wap-', 'wapa',
            'wapi', 'wapp', 'wapr', 'webc', 'winw', 'winw', 'xda', 'xda-'
        );
        if (in_array($mobile_ua, $mobile_agents)) $mobile_browser++;
        if (strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false) $mobile_browser++;
        // Pre-final check to reset everything if the user is on Windows
        if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false) $mobile_browser = 0;
        // But WP7 is also Windows, with a slightly different characteristic
        if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false) $mobile_browser++;
        if ($mobile_browser > 0) {
            return true;
        } else {
            return false;
        }
    }
}